598
FNCA52 TJSJ 230730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST WED SEP 23 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-232000-
SOUTHEAST COASTAL PLAINS-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 30
TEMP (24H TREND) 91 (+1) 74 (-2) 91
RH % (24H TREND) 52 (-12) 93 (+5) 55
WIND 20FT/EARLY(MPH) E 12 E 11 E 12
WIND 20FT/LATE(MPH) SE 13 NE 6 SE 12
MIXING HGT(FT-AGL/MSL)4930 4550
TRANSPORT WND (MPH) E 12 SE 14
VENT RATE (KT-FT) 49300 54600
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-232000-
SOUTHERN HILLS-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 89 (+3) 71 (-3) 89
RH % (24H TREND) 59 (-10) 98 (+6) 63
WIND 20FT/EARLY(MPH) E 10 E 8 E 10
WIND 20FT/LATE(MPH) SE 10 E 6 SE 10
MIXING HGT(FT-AGL/MSL)5430 5240
TRANSPORT WND (MPH) E 10 SE 13
VENT RATE (KT-FT) 48870 57640
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-232000-
NORTH COASTAL PLAINS-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 40 60
TEMP (24H TREND) 92 (+2) 74 (-2) 91
RH % (24H TREND) 60 (-5) 99 (+5) 63
WIND 20FT/EARLY(MPH) E 9 SE 11 E 10
WIND 20FT/LATE(MPH) E 14 SE 6 E 14
MIXING HGT(FT-AGL/MSL)5060 5180
TRANSPORT WND (MPH) E 9 SE 10
VENT RATE (KT-FT) 40480 46620
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-232000-
NORTHERN HILLS-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 70
TEMP (24H TREND) 90 (+2) 71 (-2) 90
RH % (24H TREND) 62 (-6) 100 (+3) 65
WIND 20FT/EARLY(MPH) E 8 SE 8 E 8
WIND 20FT/LATE(MPH) E 11 LGT/VAR E 10
MIXING HGT(FT-AGL/MSL)5320 5390
TRANSPORT WND (MPH) SE 8 SE 8
VENT RATE (KT-FT) 37240 37730
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-232000-
WEST COAST-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 20 20 40
TEMP (24H TREND) 92 (+1) 73 (-2) 91
RH % (24H TREND) 61 (-4) 99 (+3) 65
WIND 20FT/EARLY(MPH) E 9 E 8 SE 11
WIND 20FT/LATE(MPH) E 11 E 9 SE 13
MIXING HGT(FT-AGL/MSL)4640 4590
TRANSPORT WND (MPH) SE 8 SE 12
VENT RATE (KT-FT) 32480 45900
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-232000-
EASTERN INTERIOR-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 60 50
TEMP (24H TREND) 91 (+3) 72 (-4) 91
RH % (24H TREND) 58 (-7) 99 (+6) 61
WIND 20FT/EARLY(MPH) SE 9 SE 9 SE 10
WIND 20FT/LATE(MPH) SE 12 SE 8 SE 12
MIXING HGT(FT-AGL/MSL)6030 6000
TRANSPORT WND (MPH) E 10 SE 13
VENT RATE (KT-FT) 54270 66000
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-232000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 60 60
TEMP (24H TREND) 86 (+4) 70 (-4) 87
RH % (24H TREND) 62 (-7) 100 (+5) 64
WIND 20FT/EARLY(MPH) E 9 SE 8 SE 9
WIND 20FT/LATE(MPH) SE 9 SE 6 SE 10
MIXING HGT(FT-AGL/MSL)4730 4160
TRANSPORT WND (MPH) E 12 SE 14
VENT RATE (KT-FT) 47300 49920
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-232000-
CENTRAL MOUNTAIN RANGE-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 30 60
TEMP (24H TREND) 87 (+4) 68 (-3) 87
RH % (24H TREND) 63 (-12) 99 (+2) 67
WIND 20FT/EARLY(MPH) SE 6 SE 5 SE 8
WIND 20FT/LATE(MPH) SE 8 LGT/VAR SE 8
MIXING HGT(FT-AGL/MSL)5880 5810
TRANSPORT WND (MPH) SE 7 SE 9
VENT RATE (KT-FT) 35280 46480
DISPERSION 5 5
DSI 6 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-232000-
CAYEY MOUNTAIN RANGE-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60 50
TEMP (24H TREND) 86 (+3) 70 (-3) 86
RH % (24H TREND) 63 (-6) 100 (+4) 66
WIND 20FT/EARLY(MPH) E 9 E 6 E 9
WIND 20FT/LATE(MPH) SE 9 E 5 SE 9
MIXING HGT(FT-AGL/MSL)5390 5010
TRANSPORT WND (MPH) E 12 SE 13
VENT RATE (KT-FT) 53900 55110
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-232000-
VIEQUES-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 50 60
TEMP (24H TREND) 90 (+1) 77 (-3) 90
RH % (24H TREND) 58 (-2) 89 (+7) 58
WIND 20FT/EARLY(MPH) E 10 E 11 E 10
WIND 20FT/LATE(MPH) E 10 E 10 SE 11
MIXING HGT(FT-AGL/MSL)3360 3210
TRANSPORT WND (MPH) E 14 SE 14
VENT RATE (KT-FT) 40320 38520
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-232000-
CULEBRA-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 50 60
TEMP (24H TREND) 91 (+2) 79 (-2) 91
RH % (24H TREND) 59 (-5) 89 (+6) 62
WIND 20FT/EARLY(MPH) E 10 E 11 E 11
WIND 20FT/LATE(MPH) E 10 E 11 SE 11
MIXING HGT(FT-AGL/MSL)3340 3230
TRANSPORT WND (MPH) E 14 SE 15
VENT RATE (KT-FT) 40080 41990
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-232000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 20
TEMP (24H TREND) 92 (+2) 75 (-2) 91
RH % (24H TREND) 52 (-10) 95 (+6) 55
WIND 20FT/EARLY(MPH) E 13 E 11 E 14
WIND 20FT/LATE(MPH) SE 16 E 11 SE 17
MIXING HGT(FT-AGL/MSL)4870 4710
TRANSPORT WND (MPH) E 13 SE 16
VENT RATE (KT-FT) 53570 65940
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-232000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 60
TEMP (24H TREND) 88 (+1) 77 (-4) 88
RH % (24H TREND) 63 (-3) 91 (+9) 64
WIND 20FT/EARLY(MPH) E 11 E 11 E 11
WIND 20FT/LATE(MPH) E 10 E 11 SE 11
MIXING HGT(FT-AGL/MSL)3260 3290
TRANSPORT WND (MPH) E 14 E 16
VENT RATE (KT-FT) 39120 46060
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-232000-
ST CROIX-
330 AM AST WED SEP 23 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 50
TEMP (24H TREND) 90 (+2) 78 (-3) 89
RH % (24H TREND) 64 (-1) 94 (+9) 64
WIND 20FT/EARLY(MPH) E 11 E 10 E 12
WIND 20FT/LATE(MPH) SE 11 E 10 SE 12
MIXING HGT(FT-AGL/MSL)4290 4420
TRANSPORT WND (MPH) E 14 SE 15
VENT RATE (KT-FT) 51480 57460
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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